Product Overview
The euro profile half cylinder with thumbturn is a single-sided lock cylinder in the Euro Profile Cylinders category, used on doors and lock cases where one side is operated by a key and the other by a thumbturn. It is built to EN 1303 with a brass housing and brass plug, a fixed 10 mm B-dimension, and an A-dimension from 30 mm to 80 mm to suit different door thicknesses. A thumbturn on one end gives keyless egress from inside, so occupants can leave without hunting for a key. The compact 10 mm B-dimension keeps the cylinder body short where the door profile or lock case has little room, and the brass construction holds up to daily use in residential and commercial doors. Buyers specify this cylinder when they need controlled entry from outside and fast, tool-free exit from inside on the same lock.
Key Features
- Thumbturn on one end: occupants open the door from inside without a key, so exit stays quick in a fire or an emergency.
- EN 1303 construction: the cylinder is built to the European standard for cylinder performance, which gives specifiers a recognised baseline.
- Brass housing and brass plug: both load-bearing parts are brass, so the cylinder resists wear at the plug and cam over years of use.
- 10 mm B-dimension: the short body fits narrow door profiles and lock cases where a longer cylinder will not sit flush.
- A-dimension from 30 mm to 80 mm: one cylinder family covers thin cabinet doors through to thicker entrance doors.
- M5 x 55 fixing screw: the standard screw is supplied, with 40-80 mm lengths available when the door build needs a longer fixing.
- DIN cam option: the cam can be specified as DIN pattern to match the lock case geometry on the project.
- Five finishes: polished brass, satin nickel, polished chrome, matt chrome and brass let the cylinder match the surrounding door hardware.
Product Specifications
| Product name | Euro Profile Half Cylinder with Thumbturn |
|---|---|
| Standard | EN 1303 |
| Profile | Euro profile |
| Configuration | Half cylinder with knob (thumbturn) |
| Housing material | Brass |
| Plug material | Brass |
| Key material | not applicable to this half cylinder |
| Number of keys | not applicable to this half cylinder |
| A-dimension | 30 mm (30-80 mm optional) |
| B-dimension | 10 mm |
| L-dimension | 40 mm (optional lengths available) |
| Fixing screw | M5 x 55 (40-80 mm optional) |
| Cam type | DIN cam (optional) |
| Finishes | brass, polished brass, satin nickel, polished chrome, matt chrome |
| Anti-drill, anti-pick, anti-bump, anti-snap and anti-break features | not stated for this model |
| Modular and removable knob construction | not stated for this model |
Configurations & Options
| A-dimension 30 mm | shortest standard length, for thin doors and lock cases with a shallow cylinder pocket. |
|---|---|
| A-dimension 30-80 mm | intermediate lengths specified to the door thickness and lock case depth on the project. |
| L-dimension 40 mm | standard overall length, with other lengths available to order. |
| DIN cam | cam profile matched to the lock case, specified when the project calls for DIN geometry. |
| Fixing screw M5 x 55 | standard screw; 40-80 mm screws available for deeper door builds. |
| Finish brass, polished brass, satin nickel, polished chrome or matt chrome | selected to match the door hardware and the interior or exterior exposure. |
Industrial Applications
- Thumbturn half euro cylinder for access control: building managers and facility teams fit it to entrance and internal doors where staff need keyless exit but controlled entry; the thumbturn gives egress without a key while the key side stays restricted, and the 10 mm B-dimension fits standard Euro mortise lock cases.
- Half cylinder with knob for cabinet locks: cabinet and locker makers use the half cylinder on storage units, meter cabinets and equipment enclosures; the short 10 mm B-dimension suits shallow cabinet doors, and the brass plug resists wear where the lock is cycled many times a day.
- Thumbturn half euro cylinder for door hardware: door hardware distributors and joinery shops stock it to complete lever and knob sets; the five finishes let the cylinder match the handle finish, and the 30-80 mm A-dimension range covers the door thicknesses in a typical order book.
- Half cylinder with knob for rental and residential doors: landlords and property managers fit it where tenants need to exit without a key; the thumbturn side gives free egress and the key side keeps the entry controlled, with the EN 1303 construction giving a recognised performance baseline for the specification.
- Thumbturn half euro cylinder for commercial fit-out: shopfitters and partition contractors use it on back-of-house doors and service rooms; the DIN cam option matches the lock case geometry, and the brass housing holds alignment where doors are opened and closed all day.
Key Advantages
- Single-sided operation cuts key handling: the thumbturn removes the need to leave a key in the inside of the lock, so entry stays controlled while exit is immediate for anyone inside the building.
- Brass housing and plug hold the plug-to-housing fit: brass wears more slowly than die-cast alternatives at the rotating surfaces, which keeps the thumbturn and key action consistent over a long service life.
- The 10 mm B-dimension opens up narrow doors: where the lock case or door profile leaves little room, the short body sits flush instead of standing proud of the door face.
- One cylinder family covers 30-80 mm: distributors and contractors stock fewer part numbers because the A-dimension range covers thin cabinet doors through to thicker entrance doors.
- EN 1303 gives the specifier a standard to cite: the cylinder is built to the European cylinder standard, so it can be written into a door schedule without a custom performance note.
- Five finishes reduce mismatch claims: the cylinder can be ordered in the same finish family as the lever, knob or pull, which cuts the returns that come from finish differences on site.
How to Choose the Right Configuration
| A-dimension 30 mm | thin doors and shallow lock cases; the deciding parameter is the door thickness plus the lock case pocket depth. |
|---|---|
| A-dimension 40-60 mm | standard entrance and internal doors; measure the door thickness and add the lock case allowance before ordering. |
| A-dimension 70-80 mm | thick doors, fire doors with intumescent strips and deep lock cases; the longer body reaches the fixing point without an extension. |
| DIN cam | lock cases machined to DIN geometry; check the cam pattern on the existing lock case before specifying. |
| M5 x 55 screw | standard door builds; specify 40-80 mm screws when the door build needs a longer fixing. |
| Finish satin nickel or matt chrome | interior doors and modern hardware; polished brass and polished chrome suit traditional or feature doors. |
Why Choose Us
We quote the euro profile half cylinder with thumbturn price against the A-dimension, finish and cam you specify, so the quotation matches the door schedule rather than a generic list. The brass housing and plug are machined in-house and the thumbturn is assembled to the same tolerance on every batch. Buyers looking for a euro profile half cylinder with thumbturn supplier China can order mixed A-dimensions and finishes in one shipment, which keeps stock levels down for distributors. Spare fixing screws and cams ship with the order so a site fitter is not held up by a missing part. Every order carries a 12-month warranty against manufacturing defects, and we keep spare thumbturns, cams and screws in stock for after-sales replacement. Send the door thickness, lock case and finish, and we will confirm the configuration before production.
Factory Strength
The plant machines brass housings and plugs in-house, assembles the thumbturn and cam, and inspects each cylinder before packing. Production covers the full A-dimension range from 30 mm to 80 mm and all five finishes on one line, so a mixed order stays on a single schedule. Export markets include distributors and door hardware buyers who order against door schedules, and every shipment is checked against the ordered dimensions, cam type and finish before it leaves the factory.
Quality Control
Incoming brass bar stock is checked for diameter and grade before it reaches the machining cell. In-process checks follow the plug and housing through turning, milling and thumbturn assembly, with the A-dimension and 10 mm B-dimension verified against the order. Final inspection confirms the cam type, finish and fixing screw before packing, and each batch is recorded against the order for traceability.
- Incoming brass: diameter and grade checked on receipt.
- In-process: plug and housing dimensions checked through machining.
- Final: A-dimension, B-dimension, cam and finish verified.
- Traceability: batch recorded against the customer order.
Packaging & Delivery
Cylinders are packed individually and boxed in cartons sized for the order mix, with the A-dimension, finish and cam marked on the outside. Mixed orders are packed by configuration so the site fitter can pull the right cylinder without sorting. Trade terms, port and lead time are confirmed at quotation against the order quantity and finish mix.
- Individual packing: one cylinder per pack, marked with dimensions and finish.
- Carton marking: A-dimension, finish and cam shown on the outside.
- Mixed orders: packed by configuration for site sorting.
- Shipping: terms and lead time confirmed at quotation.
FAQ
What does the 10 mm B-dimension mean on this cylinder?
The B-dimension is the distance from the face of the cylinder to the centre of the cam. At 10 mm, the body is short, so it fits narrow door profiles and shallow lock cases where a longer cylinder would stand proud.
Which A-dimension do I need for my door?
The A-dimension is the length from the cylinder face to the end of the body. Measure the door thickness and the lock case pocket, then choose from 30 mm to 80 mm. Send us the door thickness and we will confirm the length.
What is the difference between the standard cam and the DIN cam?
The DIN cam follows the DIN cam pattern used on some European lock cases. Check the cam shape on the existing lock case before ordering, or send a photo and we will match it.
Can the thumbturn half euro cylinder be used for access control on entrance doors?
Yes. The thumbturn half euro cylinder for access control gives keyless exit from inside while the key side stays restricted. It suits entrance and internal doors where occupants need to leave without a key.
Can this half cylinder with knob be fitted to cabinet locks?
The half cylinder with knob for cabinet locks is a common fit on storage units, meter cabinets and equipment enclosures. The 10 mm B-dimension suits shallow cabinet doors. Confirm the cabinet lock case accepts a Euro profile cylinder before ordering.
What is the euro profile half cylinder with thumbturn price?
The euro profile half cylinder with thumbturn price depends on the A-dimension, finish, cam type and order quantity. Send the specification and quantity and we will quote against it.
Can I get a euro profile half cylinder with thumbturn datasheet?
Yes. The euro profile half cylinder with thumbturn datasheet covers the EN 1303 standard, brass housing and plug, 10 mm B-dimension, 30-80 mm A-dimension, M5 x 55 screw and the five finishes. Request it with your target configuration and we will send the matching sheet.
What are the euro profile half cylinder with thumbturn specifications?
The specifications are: EN 1303 standard, Euro profile, half cylinder with thumbturn, brass housing and plug, 10 mm B-dimension, 30-80 mm A-dimension, 40 mm L-dimension, M5 x 55 fixing screw, DIN cam option and five finishes. Key and anti-drill features are not applicable or not stated for this model. Request the datasheet for the full list.
What is your MOQ for a trial order?
MOQ depends on the A-dimension and finish mix. Tell us the configurations you need for the trial and we will confirm the minimum and the lead time.
Do you support OEM marking and mixed orders?
We support OEM marking and mixed orders across A-dimensions and finishes. Send the marking requirement and the configuration list, and we will confirm what can be arranged before production.
